I am using SQLite and I had someone help me construct this JOIN query which works quite well, but now I need to add another condition but I am having trouble introducing it to the query without it breaking.
In both tables used in the JOIN there is a column called EventId and I want to introduce the simple condition...
WHERE EventId = 123456
Below you can see a working example of the query itself along with two comments where I have tried to introduce the new condition and failed (because I'm bad at SQL).
SELECT t.MicrosoftId,
SUM(CASE WHEN name = 'necktie' THEN 1 ELSE 0 END) as 'necktie',
SUM(CASE WHEN name = 'shirt' THEN 1 ELSE 0 END) as 'shirt',
SUM(CASE WHEN name = 'suit' THEN 1 ELSE 0 END) as 'suit',
SUM(CASE WHEN name = 'man' THEN 1 ELSE 0 END) as 'man',
SUM(CASE WHEN name = 'male' THEN 1 ELSE 0 END) as 'male'
FROM TagsMSCV t
/* <---- WHERE t.EventId = 123456 (fails here...) */
LEFT JOIN
(SELECT i.MicrosoftId
FROM Images i
GROUP BY i.MicrosoftId) i
ON i.MicrosoftId = t.MicrosoftId
WHERE t.name IN ('necktie','shirt','suit','man','male')
/* <---- AND WHERE t.EventId = 123456 (fails here too...) */
GROUP BY t.MicrosoftId
try like below
select t1.* from ( SELECT t.MicrosoftId,
SUM(CASE WHEN name = 'necktie' THEN 1 ELSE 0 END) as 'necktie',
SUM(CASE WHEN name = 'shirt' THEN 1 ELSE 0 END) as 'shirt',
SUM(CASE WHEN name = 'suit' THEN 1 ELSE 0 END) as 'suit',
SUM(CASE WHEN name = 'man' THEN 1 ELSE 0 END) as 'man',
SUM(CASE WHEN name = 'male' THEN 1 ELSE 0 END) as 'male'
FROM TagsMSCV t WHERE t.EventId = 123456
and name IN ('necktie','shirt','suit','man','male') group by t.MicrosoftId
) t1
You did mistake to create subquery and as 2nd subquery no need group by as there no aggregate function used
It should be in WHERE section, but without second WHERE keyword:
SELECT t.MicrosoftId,
SUM(CASE WHEN name = 'necktie' THEN 1 ELSE 0 END) as 'necktie',
SUM(CASE WHEN name = 'shirt' THEN 1 ELSE 0 END) as 'shirt',
SUM(CASE WHEN name = 'suit' THEN 1 ELSE 0 END) as 'suit',
SUM(CASE WHEN name = 'man' THEN 1 ELSE 0 END) as 'man',
SUM(CASE WHEN name = 'male' THEN 1 ELSE 0 END) as 'male'
FROM TagsMSCV t
LEFT JOIN
(SELECT i.MicrosoftId
FROM Images i
GROUP BY i.MicrosoftId) i
ON i.MicrosoftId = t.MicrosoftId
WHERE t.name IN ('necktie','shirt','suit','man','male')
AND t.EventId = 123456
GROUP BY t.MicrosoftId
Related
For some context, I am making an image browser which is connected to an SQLite database. Within the browser, similar images are grouped into an event (EventId) and each image (MicrosoftId) is labelled with a few tags (name).
I have these two queries on the same table (TagsMSCV) but pulling out different information. Ultimately I need to combine the information in my browser so if it was possible to combine these two queries (maybe with a JOIN?) it would be a lot faster and convenient for me. Both results of these queries share the EventId column.
1st Query ():
SELECT EventId as 'event', count(*) as 'size',
SUM(case when tag_count = 1 then 1 else 0 end) as '1',
SUM(case when tag_count = 2 then 1 else 0 end) as '2',
SUM(case when tag_count = 3 then 1 else 0 end) as '3'
FROM (SELECT EventId, MicrosoftId,
SUM(case when name in ('indoor', 'cluttered', 'screen') then 1 else 0 end) as tag_count
FROM TagsMSCV GROUP BY EventId, MicrosoftId) TagsMSCV
GROUP BY EventId ORDER BY 3 DESC, 2 DESC, 1 DESC
2nd Query
SELECT EventId,
SUM(CASE WHEN name = 'indoor' THEN 1 ELSE 0 END) as indoor,
SUM(CASE WHEN name = 'cluttered' THEN 1 ELSE 0 END) as cluttered,
SUM(CASE WHEN name = 'screen' THEN 1 ELSE 0 END) as screen
FROM TagsMSCV WHERE name IN ('indoor', 'cluttered', 'screen')
GROUP BY EventId
As you can see in both queries I am feeding in the tags 'necktie' 'man', 'male' and getting different information back.
SQL Fiddle Here: https://www.db-fiddle.com/f/f8WNimjmZAj1XXeCj4PHB8/3
You should do this all in one query:
SELECT EventId as event, count(*) as size,
SUM(case when (indoor + cluttered + screen) = 1 then 1 else 0 end) as tc_1,
SUM(case when (indoor + cluttered + screen) = 2 then 1 else 0 end) as tc_2,
SUM(case when (indoor + cluttered + screen) = 3 then 1 else 0 end) as tc_3,
SUM(indoor) as indoor,
SUM(cluttered) as cluttered,
SUM(screen) as screen
FROM (SELECT EventId, MicrosoftId,
SUM(CASE WHEN name = 'indoor' THEN 1 ELSE 0 END) as indoor,
SUM(CASE WHEN name = 'cluttered' THEN 1 ELSE 0 END) as cluttered,
SUM(CASE WHEN name = 'screen' THEN 1 ELSE 0 END) as screen
FROM TagsMSCV
GROUP BY EventId, MicrosoftId
) TagsMSCV
GROUP BY EventId
ORDER BY 3 DESC, 2 DESC, 1 DESC;
You need two aggregations to get the information about the tag counts. There is no need to add more aggregations and joins to the query.
You could use an Inner join subquery
SELECT TagsMSCV.EventId as 'event', count(*) as 'size',
SUM(case when tag_count = 1 then 1 else 0 end) as '1',
SUM(case when tag_count = 2 then 1 else 0 end) as '2',
SUM(case when tag_count = 3 then 1 else 0 end) as '3',
t.necktie,
t.man,
t.male
FROM (
SELECT EventId, MicrosoftId,
SUM(case when name in ('necktie' 'man', 'male') then 1 else 0 end) as tag_count
FROM TagsMSCV GROUP BY EventId, MicrosoftId
) TagsMSCV
INNER JOIN (
SELECT EventId,
SUM(CASE WHEN name = 'necktie' THEN 1 ELSE 0 END) as necktie,
SUM(CASE WHEN name = 'man' THEN 1 ELSE 0 END) as man,
SUM(CASE WHEN name = 'male' THEN 1 ELSE 0 END) as male
FROM TagsMSCV WHERE name IN ('necktie' 'man', 'male')
GROUP BY EventId
) t on t.EventId = TagsMSCV.EventId
GROUP BY TagsMSCV.EventId
ORDER BY 3 DESC, 2 DESC, 1 DESC
I have query returning details of customers that are subscribed to channel xyz or all other channels.
To generate this results i am using the following query:
select customerID
,sum(case when channel='xyz' then 1 else 0 end) as 'xyz Count'
,sum(case when channel<>'xyz' then bundle_qty else 0 end) as 'Other'
From temptable
So my Question is, how do i Exclude customers that are subscribed to 2 channels, where one is xyz and one is another channel.
select customerID
,sum(case when channel='xyz' then 1 else 0 end) as 'xyz Count'
,sum(case when channel<>'xyz' then bundle_qty else 0 end) as 'Other'
From temptable
group by customerID
having sum(case when channel= 'xyz' then 1 else 0 end) > 0
and sum(case when channel<>'xyz' then 1 else 0 end) > 0
First, your query is not correct. It needs a group by. Second, you can do what you want using having:
select customerID,
sum(case when channel = 'xyz' then 1 else 0 end) as xyz_Count,
sum(case when channel<>'xyz' then bundle_qty else 0 end) as Other
From temptable
group by customerID
having count(*) = 2 and
sum(case when channel = 'xyz' then 1 else 0 end) = 1;
If customers can subscribe to the same channel multiple times, and you still want only "xyz" and another channel, then:
having count(distinct channel) = 2 and
(min(channel) = 'xyz' or max(channel) = 'xyz')
I have a student table around 100k records and I have two types of data in it: student name and level type with selection values primary, secondary, intermediate & university
I want to filter out the student from this table, whose have count > 0, in all level primary, secondary, intermediate & university
I was able to find the sum for each student in each level using the following query
SELECT
student_id,
SUM(CASE WHEN lev_type = 'primary' THEN 1 ELSE 0 END) AS primary,
SUM(CASE WHEN lev_type = 'secondary' THEN 1 ELSE 0 END) AS secondary,
SUM(CASE WHEN lev_type = 'intermediate' THEN 1 ELSE 0 END) AS intermediate,
SUM(CASE WHEN level_type = 'university' THEN 1 ELSE 0 END) AS university
FROM
student_details
GROUP BY
student_id
and I am getting a result like (note that my result is 92242 row(s))
attendee_id primary secondary intermediate uni
student1 0 1 1 2
student2 0 1 1 0
student3 88 209 92 32
student4 0 1 1 0
student5 0 1 1 0
How to filter out student3 from this result?
You can simply add a where statement as follows:
SELECT student_id,
SUM(case when lev_type = 'primary' then 1 else 0 end) as primary,
SUM(case when lev_type = 'secondary' then 1 else 0 end) as secondary ,
SUM(case when lev_type = 'intermediate' then 1 else 0 end) as intermediate ,
SUM(case when lev_type = 'university' then 1 else 0 end) as university
FROM student_details
GROUP BY student_id
WHERE primary = 0 OR secondary = 0 OR intermediate = 0 OR university = 0
HAVING might get you what you want. For example:
SELECT student_id,
sum(case when lev_type = 'primary' then 1 else 0 end) as primary,
sum(case when lev_type = 'secondary' then 1 else 0 end) as secondary ,
sum(case when lev_type = 'intermediate' then 1 else 0 end) as intermediate ,
sum(case when level_type = 'university' then 1 else 0 end) as university
from student_details
group by student_id
-- Put the criteria here by which you want to filter
having sum(case when lev_type = 'primary' then 1 else 0 end) = 0
and sum(case when lev_type = 'secondary' then 1 else 0 end) = 0
and sum(case when lev_type = 'intermediate' then 1 else 0 end) = 0
and sum(case when level_type = 'university' then 1 else 0 end) = 0
can i combine result row 3 and row 4 into 1 row record?
select #fYear as [Year],
(case when main.Description in ('Kecil', 'Tanah') then 'JK'
else main.Description
end) as description,
--CardType,
sum(case when MONTH(blue.AppliedDate) = 1 then 1 else 0 end) as Jan_Collection,
sum(case when MONTH(blue.AppliedDate) = 2 then 1 else 0 end) as Feb_Collection,
...
from tblR as main
left join tblP as b on main.requestorid = b.requestorid
left join tblB as blue on b.partyid = blue.partyid and YEAR(blue.AppliedDate) = #fYear
group by (case when main.Description in ('Kecil', 'Tanah') then 'JK'
else main.Description
end)
this output like:
https://gyazo.com/d930cb2aee92f90ba31dd543d6ca64f3
but can i display combine record row 3 and 4 into 1 record like JK like this picture: https://gyazo.com/a89ed2fa04b51135bf8601d59d4af0b2
Thanks.
If you want to combine those specific descriptions, you can use a case, both in the select and the group by:
select #fYear as [Year],
(case when description in ('kecil', 'Tanah') then 'JK'
else main.Description
end) as Description,
sum(case when MONTH(blue.AppliedDate) = 1 then 1 else 0 end) as Jan_Collection,
sum(case when MONTH(blue.AppliedDate) = 2 then 1 else 0 end) as Feb_Collection,
...
from tblR main left join
tblP b
on main.requestorid = b.requestorid left join
tblB
blue
on b.partyid = blue.partyid and YEAR(blue.AppliedDate) = #fYear
group by (case when description in ('kecil', 'Tanah') then 'JK'
else main.Description
end)
I am trying to find a better way to write this sql server code 2008. It works and data is accurate. Reason i ask is that i will be asked to do this for several other reports going forward and want to reduce the amount of code to upkeep going forward.
How can i take a field where i sum for the yes/no/- (dash) in each field without doing an individual sum as i have in code. Each table is a month of detail data which i sum using in a CTE. i changed the table name for each month and Union All to put data together. Is there a better way to do this. This is a small sample of code. Thanks for the help.
WITH H AS (
SELECT 'August' AS Month_Name
, SUM(CASE WHEN G.FFS = '-' THEN 1 ELSE 0 END) AS FFS_Dash
, SUM(CASE WHEN G.FFS = 'Yes' THEN 1 ELSE 0 END) AS FFS_Yes
, SUM(CASE WHEN G.FFS = 'No' THEN 1 ELSE 0 END) AS FFS_No
, SUM(CASE WHEN G.DNA = '-' THEN 1 ELSE 0 END) AS DNA_Dash
, SUM(CASE WHEN G.DNA = 'Yes' THEN 1 ELSE 0 END) AS DNA_Yes
, SUM(CASE WHEN G.DNA = 'No' THEN 1 ELSE 0 END) AS DNA_No
FROM table08 G )
, G AS (
SELECT 'July' AS Month_Name
, SUM(CASE WHEN G.FFS = '-' THEN 1 ELSE 0 END) AS FFS_Dash
, SUM(CASE WHEN G.FFS = 'Yes' THEN 1 ELSE 0 END) AS FFS_Yes
, SUM(CASE WHEN G.FFS = 'No' THEN 1 ELSE 0 END) AS FFS_No
, SUM(CASE WHEN G.DNA = '-' THEN 1 ELSE 0 END) AS DNA_Dash
, SUM(CASE WHEN G.DNA = 'Yes' THEN 1 ELSE 0 END) AS DNA_Yes
, SUM(CASE WHEN G.DNA = 'No' THEN 1 ELSE 0 END) AS DNA_No
FROM table07 G )
select * from H
UNION ALL
select * from G
How about:
SELECT Month_Name,
SUM(CASE WHEN G.FFS = '-' THEN 1 ELSE 0 END) AS FFS_Dash,
SUM(CASE WHEN G.FFS = 'Yes' THEN 1 ELSE 0 END) AS FFS_Yes,
SUM(CASE WHEN G.FFS = 'No' THEN 1 ELSE 0 END) AS FFS_No,
SUM(CASE WHEN G.DNA = '-' THEN 1 ELSE 0 END) AS DNA_Dash,
SUM(CASE WHEN G.DNA = 'Yes' THEN 1 ELSE 0 END) AS DNA_Yes,
SUM(CASE WHEN G.DNA = 'No' THEN 1 ELSE 0 END) AS DNA_No
FROM ((select 'July' as Month_Name, G.*
from table07 G
) union all
(select 'August', H.*
from table08 H
)
) gh
GROUP BY Month_Name;
However, having tables with the same structure is usually a sign of poor database design. You should have a single table with a column representing the month.